| article html file updated | 9 February 2020 05:46 CET | Update | https://www.mdpi.com/1422-0067/19/2/493 |
| article html file updated | 30 September 2019 14:12 CEST | Update | - |
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| article html file updated | 7 February 2018 05:26 CET | Update | - |
| article xml uploaded. | 7 February 2018 05:25 CET | Update | https://www.mdpi.com/1422-0067/19/2/493/xml |
| article html file updated | 7 February 2018 05:14 CET | Original file | - |
| article xml uploaded. | 7 February 2018 05:13 CET | Original file | - |
| article pdf uploaded. | 7 February 2018 05:13 CET | Version of Record | https://www.mdpi.com/1422-0067/19/2/493/pdf |
